Home / 20,545.36-28,352.62-11,113.92

Finding the Fourth Proportional to 20,545.36, 28,352.62 and 11,113.92

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Solution

The fourth proportional to 20,545.36, 28,352.62 and 11,113.92 is: 15,337.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.36 : 28,352.62 = 11,113.92 : x
  2. Step 2: Convert to fraction form
    20,545.36/28,352.62 = 11,113.92/x
  3. Step 3: Cross multiply
    20,545.36x = 28,352.62 × 11,113.92
  4. Step 4: Simplify right side
    20,545.36x = 315,108,750.47
  5. Step 5: Solve for x
    x = 315,108,750.47/20,545.36
  6. Step 6: Final answer
    x = 15,337.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.